[AURORA-913] Replace MaintenanceMode field with HostAttributes in HostOffer

• Type: Story
• Status: Resolved
• Priority: Major
• Resolution: Fixed
• Fix Version/s: 0.8.0
• Component/s: Scheduler
• Sprint: Twitter Aurora Q4 Sprint 3
• Assignee: Bill Farner
• Reporter: Bill Farner
• Created: 03/Nov/14 22:58
• Updated: 04/May/15 14:09
• Resolved: 13/Nov/14 00:12

Description

Address this TODO:

  /**
   * Encapsulate an offer from a host, and the host's maintenance mode.
   */
  class HostOffer {
    private final Offer offer;

    // TODO(wfarner): Replace this with HostAttributes for more use of this caching.
    private final MaintenanceMode mode;

Success here will mean avoiding O (n=num offers) fetching of host attributes associated with offers when scheduling a task.